Mortar spreader



Oct. 27, 1931.

R. D. HOOD I MORTAR SPREADER Filed April 29. 1929 INVENTOR. 720M 119.Won-m5. 3M W ATTORN s. I

spreader,

Patented Oct. 27, 1931 UNITED STATES PATENT OFFICE aonn'nr n. noon, orSAUSALITO, cauronm momma srnmnn Application nled April 29, 1828. SerialNo. 358,817.

ings, etc.

The object of. the resent invention is to generally improve an simplifythe construction and operation of motar Spreaders; to provide a spreaderwhereby time and labor may be saved in the application of mortar andthelike to lathed surfaces; to provide a spreader which is adapted to beheld by an operator and moved over a surface whereupon mortar is to beapplied and whereby 5 ample pressure may be exerted to insurepenetration of the mortar between the lath toinsure keying of themortar; to provide a spreader which is adapted to be continuouslysupplied with mortar from a pumpor other source of supply underpressure; and further.

to provide a spreader which is adapted to trowel the mortar 'asit isapplied an which is also adapted to readil regulate the thickness of themortar sur aceduring application.

The mortar s readeris shown by way of illustration in t e accompanyingdrawings, in which:

Fig. 1 is a perspective view of the mortar Fig. 2 is a similar viewshowing the rear side of the spreader.

Fig. 3 is a central vertical section of the mortar spreader, showing itsposition with relation to a wall surface while mortar is being applied.l

Referrlng to the drawin s in detail, and particularly Figs. 1 and 2,indicates a top plate in which is formed a cleanout, opening which isnormally closed by means of a cover member 2 secured to the plate A, byhinges 3, the cover being normally held in a closed position bya latch4.

Secured to the late A'are a pair of handles, such as indicate at 5 and6, and formed integral with the plate are side flanges 7 and an. upperend flange 8. These flanges support a bottom plate 9 which is secured bymeans of screws or the like, indicated at 10. An interior chamber 11 isformed between the plates A and 9, and this chamber is sup plied withmortar or a cementitious mixture through means of a connection such asshown at 12, this connection being made through means of a hose 13 orvthe like which communicates with the source of sup ly under pressure,such as a pump or e like, which is capable of deliverin mortar undersuflicient pressure to force it through the hose line, the chamber 11and through a discharge openingformed at the upper end of the mortarspreader, such as indicated at 14.

Secured to the up er end of the mortar spreader 1s a air 0 auxiliaryside flanges 15, and secure between said side flanges is a trowel plate16.

In actual operation the hose line 13 is connected with a pump or thelike, such as illustrated in my co-pendihg ap lication entitledPlastering machine ed Ma 13, 1929,; Serial Number 362,777, the hose ingsufliciently long to permit the mortar spreader to be moved about.

When mortor under pressure is being delivv 'ered the mortar spreader isgrasped by means of the handles indicated at 5 and 6, and it IS moved inan upward direction as mdlcated by the arrow a (see Fig. 3) over alathed surface or the like, indicated at 17.

The mortar discharges through the opening 14 and it is retained-fromexcessive spreading by'the auxiliary side flan es 15, and as the mortarspreader is move upwardly as the mortar discharges, it will be spreadout and troweled by means of the plate 16. Pressure is brought to bearon the handle 6 during this operation, and this pressure is suflicientto force the mortar through the spaces between the laths, thus insuringa key forma- 4 tion such as indicated at 18.

The thickness of the plaster coat is regulated by tilting or changmg theangular position of the mortar spreader with relation to the surface 17to which the mortar is being applied. For instance, by holding themortar spreader in the'position shown in Fig. 3, the thinnest coat isapplied, but if the lower end of the mortar spreader is swung inwardlyin the direction of the arrow 6 then the thickness of the coat isincreased as the space between the opening 14 and the surface of thelath is increased, thus increasing the amount of mortar depositedbetween the surface 17 and the trowel plate 16.

5 The operation of applying the mortar in the manner here described isvery simple, and it requires comparatively little skill. The applicationis accomplished very rapidly and exceeds by far the number of squarefeet that can be applied by hand trowels. The mortar may be applied towalls and ceilings, in fact practically any place where a hand trowelcan be used, and the amount of work actually accomplished is usuallyseveral times that obtained by hand work.

The mortar spreader can be readily cleaned after a days work as it isonly necessary to open the hand hole cover 2 and to flush out theinterior and the hose line with water.

Danger of clogging up the mortar spreader is thus entirely avoided.

' While certain features of the present invention are more or lessspecifically described, I wish it understood that various .2 changes maybe resorted to within the scope of the appended claims, similarly thatthe materials and finishes of the several parts employed may be such asthe manufacturer may decide, or varying conditions or uses may demand.

Having thus described my invention, what I claim and desire to secure byLetters Patent is: I

1. A mortar spreader comprising a flattened casing provided with anintake connection at its lower end adapted to be connected with a sourceof mortar supply under pressure, said casing having an elongateddischarge opening formed in the upper end, a

pair of handle members on the spreader, a

pair of side flanges secured to the spreader one at each end of thedischarge opening, and

' a trowel plate secured between said flanges and disposed on an angleto the flattened surface of the spreader.

2. In a mortar spreader of the character described having an elongateddischarge opening formed therein, an inclined trowel plate disposedbelow the opening, the upper edge of said plate terminating at the loweredge of the discharge opening, and a plate at each end of the trowelplate and disposed substantiallyat right angles thereto, said platespreventing lateral spreading of the mortar and determining the thicknessof the mortar applied.

3. In a mortar spreader of the character described having an elongateddischarge opening formed therein, an inclined trowel plate disposedbelow the opening, the upper edge of said plate terminating at the loweredge of the discharge opening, and a side flange at each end of thetrowel plate to prevent mortar from escaping outwardly over the ends ofthe trowel plate.

ROBERT Ill HOOD.

